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[in-fuh n-tl-ahyz, -tahy-lahyz, in-fan-tl-ahyz]
verb (used with object), in·fan·til·ized, in·fan·til·iz·ing.
  1. to keep in or reduce to an infantile state.
  2. to treat or regard as infantile or immature.
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Also especially British, in·fan·til·ise.

Origin of infantilize

1940–45; infantile + -ize, or by back formation from infantilization
Related formsin·fan·til·i·za·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for infantilize

Contemporary Examples of infantilize